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Comparing libev/ev.c (file contents):
Revision 1.250 by root, Thu May 22 02:44:57 2008 UTC vs.
Revision 1.295 by root, Wed Jul 8 04:29:31 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
154	#ifndef _WIN32	168	#ifndef _WIN32
155	# include <sys/time.h>	169	# include <sys/time.h>
156	# include <sys/wait.h>	170	# include <sys/wait.h>
157	# include <unistd.h>	171	# include <unistd.h>
158	#else	172	#else
		173	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	174	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	175	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	176	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	177	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	178	# endif
164	#endif	179	#endif
165		180
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	181	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		182
		183	#ifndef EV_USE_CLOCK_SYSCALL
		184	# if __linux && __GLIBC__ >= 2
		185	# define EV_USE_CLOCK_SYSCALL 1
		186	# else
		187	# define EV_USE_CLOCK_SYSCALL 0
		188	# endif
		189	#endif
		190
168	#ifndef EV_USE_MONOTONIC	191	#ifndef EV_USE_MONOTONIC
		192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		193	# define EV_USE_MONOTONIC 1
		194	# else
169	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
		196	# endif
170	#endif	197	#endif
171		198
172	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	201	#endif
175		202
176	#ifndef EV_USE_NANOSLEEP	203	#ifndef EV_USE_NANOSLEEP
		204	# if _POSIX_C_SOURCE >= 199309L
		205	# define EV_USE_NANOSLEEP 1
		206	# else
177	# define EV_USE_NANOSLEEP 0	207	# define EV_USE_NANOSLEEP 0
		208	# endif
178	#endif	209	#endif
179		210
180	#ifndef EV_USE_SELECT	211	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	212	# define EV_USE_SELECT 1
182	#endif	213	#endif
…		…
253		284
254	#ifndef EV_HEAP_CACHE_AT	285	#ifndef EV_HEAP_CACHE_AT
255	# define EV_HEAP_CACHE_AT !EV_MINIMAL	286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
256	#endif	287	#endif
257		288
		289	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		290	/* which makes programs even slower. might work on other unices, too. */
		291	#if EV_USE_CLOCK_SYSCALL
		292	# include <syscall.h>
		293	# ifdef SYS_clock_gettime
		294	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		295	# undef EV_USE_MONOTONIC
		296	# define EV_USE_MONOTONIC 1
		297	# else
		298	# undef EV_USE_CLOCK_SYSCALL
		299	# define EV_USE_CLOCK_SYSCALL 0
		300	# endif
		301	#endif
		302
258	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	303	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
259		304
260	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
261	# undef EV_USE_MONOTONIC	306	# undef EV_USE_MONOTONIC
262	# define EV_USE_MONOTONIC 0	307	# define EV_USE_MONOTONIC 0
…		…
277	# include <sys/select.h>	322	# include <sys/select.h>
278	# endif	323	# endif
279	#endif	324	#endif
280		325
281	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
282	# include <sys/inotify.h>	329	# include <sys/inotify.h>
		330	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		331	# ifndef IN_DONT_FOLLOW
		332	# undef EV_USE_INOTIFY
		333	# define EV_USE_INOTIFY 0
		334	# endif
283	#endif	335	#endif
284		336
285	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
286	# include <winsock.h>	338	# include <winsock.h>
287	#endif	339	#endif
…		…
339	# define inline_speed static noinline	391	# define inline_speed static noinline
340	#else	392	#else
341	# define inline_speed static inline	393	# define inline_speed static inline
342	#endif	394	#endif
343		395
344	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	396	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		397
		398	#if EV_MINPRI == EV_MAXPRI
		399	# define ABSPRI(w) (((W)w), 0)
		400	#else
345	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	401	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		402	#endif
346		403
347	#define EMPTY /* required for microsofts broken pseudo-c compiler */	404	#define EMPTY /* required for microsofts broken pseudo-c compiler */
348	#define EMPTY2(a,b) /* used to suppress some warnings */	405	#define EMPTY2(a,b) /* used to suppress some warnings */
349		406
350	typedef ev_watcher *W;	407	typedef ev_watcher *W;
…		…
352	typedef ev_watcher_time *WT;	409	typedef ev_watcher_time *WT;
353		410
354	#define ev_active(w) ((W)(w))->active	411	#define ev_active(w) ((W)(w))->active
355	#define ev_at(w) ((WT)(w))->at	412	#define ev_at(w) ((WT)(w))->at
356		413
357	#if EV_USE_MONOTONIC	414	#if EV_USE_REALTIME
358	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	415	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
359	/* giving it a reasonably high chance of working on typical architetcures */	416	/* giving it a reasonably high chance of working on typical architetcures */
		417	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		418	#endif
		419
		420	#if EV_USE_MONOTONIC
360	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	421	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
361	#endif	422	#endif
362		423
363	#ifdef _WIN32	424	#ifdef _WIN32
364	# include "ev_win32.c"	425	# include "ev_win32.c"
…		…
373	{	434	{
374	syserr_cb = cb;	435	syserr_cb = cb;
375	}	436	}
376		437
377	static void noinline	438	static void noinline
378	syserr (const char *msg)	439	ev_syserr (const char *msg)
379	{	440	{
380	if (!msg)	441	if (!msg)
381	msg = "(libev) system error";	442	msg = "(libev) system error";
382		443
383	if (syserr_cb)	444	if (syserr_cb)
…		…
429	#define ev_malloc(size) ev_realloc (0, (size))	490	#define ev_malloc(size) ev_realloc (0, (size))
430	#define ev_free(ptr) ev_realloc ((ptr), 0)	491	#define ev_free(ptr) ev_realloc ((ptr), 0)
431		492
432	/*****************************************************************************/	493	/*****************************************************************************/
433		494
		495	/* file descriptor info structure */
434	typedef struct	496	typedef struct
435	{	497	{
436	WL head;	498	WL head;
437	unsigned char events;	499	unsigned char events; /* the events watched for */
		500	unsigned char reify; /* flag set when this ANFD needs reification */
		501	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
438	unsigned char reify;	502	unsigned char unused;
		503	#if EV_USE_EPOLL
		504	unsigned int egen; /* generation counter to counter epoll bugs */
		505	#endif
439	#if EV_SELECT_IS_WINSOCKET	506	#if EV_SELECT_IS_WINSOCKET
440	SOCKET handle;	507	SOCKET handle;
441	#endif	508	#endif
442	} ANFD;	509	} ANFD;
443		510
		511	/* stores the pending event set for a given watcher */
444	typedef struct	512	typedef struct
445	{	513	{
446	W w;	514	W w;
447	int events;	515	int events; /* the pending event set for the given watcher */
448	} ANPENDING;	516	} ANPENDING;
449		517
450	#if EV_USE_INOTIFY	518	#if EV_USE_INOTIFY
451	/* hash table entry per inotify-id */	519	/* hash table entry per inotify-id */
452	typedef struct	520	typedef struct
…		…
455	} ANFS;	523	} ANFS;
456	#endif	524	#endif
457		525
458	/* Heap Entry */	526	/* Heap Entry */
459	#if EV_HEAP_CACHE_AT	527	#if EV_HEAP_CACHE_AT
		528	/* a heap element */
460	typedef struct {	529	typedef struct {
461	ev_tstamp at;	530	ev_tstamp at;
462	WT w;	531	WT w;
463	} ANHE;	532	} ANHE;
464		533
465	#define ANHE_w(he) (he).w /* access watcher, read-write */	534	#define ANHE_w(he) (he).w /* access watcher, read-write */
466	#define ANHE_at(he) (he).at /* access cached at, read-only */	535	#define ANHE_at(he) (he).at /* access cached at, read-only */
467	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	536	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
468	#else	537	#else
		538	/* a heap element */
469	typedef WT ANHE;	539	typedef WT ANHE;
470		540
471	#define ANHE_w(he) (he)	541	#define ANHE_w(he) (he)
472	#define ANHE_at(he) (he)->at	542	#define ANHE_at(he) (he)->at
473	#define ANHE_at_cache(he)	543	#define ANHE_at_cache(he)
…		…
499		569
500	#endif	570	#endif
501		571
502	/*****************************************************************************/	572	/*****************************************************************************/
503		573
		574	#ifndef EV_HAVE_EV_TIME
504	ev_tstamp	575	ev_tstamp
505	ev_time (void)	576	ev_time (void)
506	{	577	{
507	#if EV_USE_REALTIME	578	#if EV_USE_REALTIME
		579	if (expect_true (have_realtime))
		580	{
508	struct timespec ts;	581	struct timespec ts;
509	clock_gettime (CLOCK_REALTIME, &ts);	582	clock_gettime (CLOCK_REALTIME, &ts);
510	return ts.tv_sec + ts.tv_nsec * 1e-9;	583	return ts.tv_sec + ts.tv_nsec * 1e-9;
511	#else	584	}
		585	#endif
		586
512	struct timeval tv;	587	struct timeval tv;
513	gettimeofday (&tv, 0);	588	gettimeofday (&tv, 0);
514	return tv.tv_sec + tv.tv_usec * 1e-6;	589	return tv.tv_sec + tv.tv_usec * 1e-6;
515	#endif
516	}	590	}
		591	#endif
517		592
518	ev_tstamp inline_size	593	inline_size ev_tstamp
519	get_clock (void)	594	get_clock (void)
520	{	595	{
521	#if EV_USE_MONOTONIC	596	#if EV_USE_MONOTONIC
522	if (expect_true (have_monotonic))	597	if (expect_true (have_monotonic))
523	{	598	{
…		…
556	struct timeval tv;	631	struct timeval tv;
557		632
558	tv.tv_sec = (time_t)delay;	633	tv.tv_sec = (time_t)delay;
559	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	634	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
560		635
		636	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		637	/* somehting not guaranteed by newer posix versions, but guaranteed */
		638	/* by older ones */
561	select (0, 0, 0, 0, &tv);	639	select (0, 0, 0, 0, &tv);
562	#endif	640	#endif
563	}	641	}
564	}	642	}
565		643
566	/*****************************************************************************/	644	/*****************************************************************************/
567		645
568	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	646	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
569		647
570	int inline_size	648	/* find a suitable new size for the given array, */
		649	/* hopefully by rounding to a ncie-to-malloc size */
		650	inline_size int
571	array_nextsize (int elem, int cur, int cnt)	651	array_nextsize (int elem, int cur, int cnt)
572	{	652	{
573	int ncur = cur + 1;	653	int ncur = cur + 1;
574		654
575	do	655	do
…		…
592	array_realloc (int elem, void *base, int *cur, int cnt)	672	array_realloc (int elem, void *base, int *cur, int cnt)
593	{	673	{
594	*cur = array_nextsize (elem, *cur, cnt);	674	*cur = array_nextsize (elem, *cur, cnt);
595	return ev_realloc (base, elem * *cur);	675	return ev_realloc (base, elem * *cur);
596	}	676	}
		677
		678	#define array_init_zero(base,count) \
		679	memset ((void *)(base), 0, sizeof (*(base)) * (count))
597		680
598	#define array_needsize(type,base,cur,cnt,init) \	681	#define array_needsize(type,base,cur,cnt,init) \
599	if (expect_false ((cnt) > (cur))) \	682	if (expect_false ((cnt) > (cur))) \
600	{ \	683	{ \
601	int ocur_ = (cur); \	684	int ocur_ = (cur); \
…		…
613	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	696	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614	}	697	}
615	#endif	698	#endif
616		699
617	#define array_free(stem, idx) \	700	#define array_free(stem, idx) \
618	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	701	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
619		702
620	/*****************************************************************************/	703	/*****************************************************************************/
		704
		705	/* dummy callback for pending events */
		706	static void noinline
		707	pendingcb (EV_P_ ev_prepare *w, int revents)
		708	{
		709	}
621		710
622	void noinline	711	void noinline
623	ev_feed_event (EV_P_ void *w, int revents)	712	ev_feed_event (EV_P_ void *w, int revents)
624	{	713	{
625	W w_ = (W)w;	714	W w_ = (W)w;
…		…
634	pendings [pri][w_->pending - 1].w = w_;	723	pendings [pri][w_->pending - 1].w = w_;
635	pendings [pri][w_->pending - 1].events = revents;	724	pendings [pri][w_->pending - 1].events = revents;
636	}	725	}
637	}	726	}
638		727
639	void inline_speed	728	inline_speed void
		729	feed_reverse (EV_P_ W w)
		730	{
		731	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		732	rfeeds [rfeedcnt++] = w;
		733	}
		734
		735	inline_size void
		736	feed_reverse_done (EV_P_ int revents)
		737	{
		738	do
		739	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		740	while (rfeedcnt);
		741	}
		742
		743	inline_speed void
640	queue_events (EV_P_ W *events, int eventcnt, int type)	744	queue_events (EV_P_ W *events, int eventcnt, int type)
641	{	745	{
642	int i;	746	int i;
643		747
644	for (i = 0; i < eventcnt; ++i)	748	for (i = 0; i < eventcnt; ++i)
645	ev_feed_event (EV_A_ events [i], type);	749	ev_feed_event (EV_A_ events [i], type);
646	}	750	}
647		751
648	/*****************************************************************************/	752	/*****************************************************************************/
649		753
650	void inline_size	754	inline_speed void
651	anfds_init (ANFD *base, int count)
652	{
653	while (count--)
654	{
655	base->head = 0;
656	base->events = EV_NONE;
657	base->reify = 0;
658
659	++base;
660	}
661	}
662
663	void inline_speed
664	fd_event (EV_P_ int fd, int revents)	755	fd_event (EV_P_ int fd, int revents)
665	{	756	{
666	ANFD *anfd = anfds + fd;	757	ANFD *anfd = anfds + fd;
667	ev_io *w;	758	ev_io *w;
668		759
…		…
680	{	771	{
681	if (fd >= 0 && fd < anfdmax)	772	if (fd >= 0 && fd < anfdmax)
682	fd_event (EV_A_ fd, revents);	773	fd_event (EV_A_ fd, revents);
683	}	774	}
684		775
685	void inline_size	776	/* make sure the external fd watch events are in-sync */
		777	/* with the kernel/libev internal state */
		778	inline_size void
686	fd_reify (EV_P)	779	fd_reify (EV_P)
687	{	780	{
688	int i;	781	int i;
689		782
690	for (i = 0; i < fdchangecnt; ++i)	783	for (i = 0; i < fdchangecnt; ++i)
…		…
699	events |= (unsigned char)w->events;	792	events |= (unsigned char)w->events;
700		793
701	#if EV_SELECT_IS_WINSOCKET	794	#if EV_SELECT_IS_WINSOCKET
702	if (events)	795	if (events)
703	{	796	{
704	unsigned long argp;	797	unsigned long arg;
705	#ifdef EV_FD_TO_WIN32_HANDLE	798	#ifdef EV_FD_TO_WIN32_HANDLE
706	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	799	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
707	#else	800	#else
708	anfd->handle = _get_osfhandle (fd);	801	anfd->handle = _get_osfhandle (fd);
709	#endif	802	#endif
710	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	803	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
711	}	804	}
712	#endif	805	#endif
713		806
714	{	807	{
715	unsigned char o_events = anfd->events;	808	unsigned char o_events = anfd->events;
716	unsigned char o_reify = anfd->reify;	809	unsigned char o_reify = anfd->reify;
717		810
718	anfd->reify = 0;	811	anfd->reify = 0;
719	anfd->events = events;	812	anfd->events = events;
720		813
721	if (o_events != events || o_reify & EV_IOFDSET)	814	if (o_events != events || o_reify & EV__IOFDSET)
722	backend_modify (EV_A_ fd, o_events, events);	815	backend_modify (EV_A_ fd, o_events, events);
723	}	816	}
724	}	817	}
725		818
726	fdchangecnt = 0;	819	fdchangecnt = 0;
727	}	820	}
728		821
729	void inline_size	822	/* something about the given fd changed */
		823	inline_size void
730	fd_change (EV_P_ int fd, int flags)	824	fd_change (EV_P_ int fd, int flags)
731	{	825	{
732	unsigned char reify = anfds [fd].reify;	826	unsigned char reify = anfds [fd].reify;
733	anfds [fd].reify |= flags;	827	anfds [fd].reify |= flags;
734		828
…		…
738	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	832	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
739	fdchanges [fdchangecnt - 1] = fd;	833	fdchanges [fdchangecnt - 1] = fd;
740	}	834	}
741	}	835	}
742		836
743	void inline_speed	837	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		838	inline_speed void
744	fd_kill (EV_P_ int fd)	839	fd_kill (EV_P_ int fd)
745	{	840	{
746	ev_io *w;	841	ev_io *w;
747		842
748	while ((w = (ev_io *)anfds [fd].head))	843	while ((w = (ev_io *)anfds [fd].head))
…		…
750	ev_io_stop (EV_A_ w);	845	ev_io_stop (EV_A_ w);
751	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	846	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
752	}	847	}
753	}	848	}
754		849
755	int inline_size	850	/* check whether the given fd is atcually valid, for error recovery */
		851	inline_size int
756	fd_valid (int fd)	852	fd_valid (int fd)
757	{	853	{
758	#ifdef _WIN32	854	#ifdef _WIN32
759	return _get_osfhandle (fd) != -1;	855	return _get_osfhandle (fd) != -1;
760	#else	856	#else
…		…
768	{	864	{
769	int fd;	865	int fd;
770		866
771	for (fd = 0; fd < anfdmax; ++fd)	867	for (fd = 0; fd < anfdmax; ++fd)
772	if (anfds [fd].events)	868	if (anfds [fd].events)
773	if (!fd_valid (fd) == -1 && errno == EBADF)	869	if (!fd_valid (fd) && errno == EBADF)
774	fd_kill (EV_A_ fd);	870	fd_kill (EV_A_ fd);
775	}	871	}
776		872
777	/* called on ENOMEM in select/poll to kill some fds and retry */	873	/* called on ENOMEM in select/poll to kill some fds and retry */
778	static void noinline	874	static void noinline
…		…
796		892
797	for (fd = 0; fd < anfdmax; ++fd)	893	for (fd = 0; fd < anfdmax; ++fd)
798	if (anfds [fd].events)	894	if (anfds [fd].events)
799	{	895	{
800	anfds [fd].events = 0;	896	anfds [fd].events = 0;
		897	anfds [fd].emask = 0;
801	fd_change (EV_A_ fd, EV_IOFDSET | 1);	898	fd_change (EV_A_ fd, EV__IOFDSET | 1);
802	}	899	}
803	}	900	}
804		901
805	/*****************************************************************************/	902	/*****************************************************************************/
806		903
…		…
822	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	919	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	920	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824	#define UPHEAP_DONE(p,k) ((p) == (k))	921	#define UPHEAP_DONE(p,k) ((p) == (k))
825		922
826	/* away from the root */	923	/* away from the root */
827	void inline_speed	924	inline_speed void
828	downheap (ANHE *heap, int N, int k)	925	downheap (ANHE *heap, int N, int k)
829	{	926	{
830	ANHE he = heap [k];	927	ANHE he = heap [k];
831	ANHE *E = heap + N + HEAP0;	928	ANHE *E = heap + N + HEAP0;
832		929
…		…
872	#define HEAP0 1	969	#define HEAP0 1
873	#define HPARENT(k) ((k) >> 1)	970	#define HPARENT(k) ((k) >> 1)
874	#define UPHEAP_DONE(p,k) (!(p))	971	#define UPHEAP_DONE(p,k) (!(p))
875		972
876	/* away from the root */	973	/* away from the root */
877	void inline_speed	974	inline_speed void
878	downheap (ANHE *heap, int N, int k)	975	downheap (ANHE *heap, int N, int k)
879	{	976	{
880	ANHE he = heap [k];	977	ANHE he = heap [k];
881		978
882	for (;;)	979	for (;;)
…		…
902	ev_active (ANHE_w (he)) = k;	999	ev_active (ANHE_w (he)) = k;
903	}	1000	}
904	#endif	1001	#endif
905		1002
906	/* towards the root */	1003	/* towards the root */
907	void inline_speed	1004	inline_speed void
908	upheap (ANHE *heap, int k)	1005	upheap (ANHE *heap, int k)
909	{	1006	{
910	ANHE he = heap [k];	1007	ANHE he = heap [k];
911		1008
912	for (;;)	1009	for (;;)
…		…
923		1020
924	heap [k] = he;	1021	heap [k] = he;
925	ev_active (ANHE_w (he)) = k;	1022	ev_active (ANHE_w (he)) = k;
926	}	1023	}
927		1024
928	void inline_size	1025	/* move an element suitably so it is in a correct place */
		1026	inline_size void
929	adjustheap (ANHE *heap, int N, int k)	1027	adjustheap (ANHE *heap, int N, int k)
930	{	1028	{
931	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1029	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
932	upheap (heap, k);	1030	upheap (heap, k);
933	else	1031	else
934	downheap (heap, N, k);	1032	downheap (heap, N, k);
935	}	1033	}
936		1034
937	/* rebuild the heap: this function is used only once and executed rarely */	1035	/* rebuild the heap: this function is used only once and executed rarely */
938	void inline_size	1036	inline_size void
939	reheap (ANHE *heap, int N)	1037	reheap (ANHE *heap, int N)
940	{	1038	{
941	int i;	1039	int i;
		1040
942	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1041	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
943	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */	1042	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
944	for (i = 0; i < N; ++i)	1043	for (i = 0; i < N; ++i)
945	upheap (heap, i + HEAP0);	1044	upheap (heap, i + HEAP0);
946	}	1045	}
947		1046
948	#if EV_VERIFY
949	static void
950	checkheap (ANHE *heap, int N)
951	{
952	int i;
953
954	for (i = HEAP0; i < N + HEAP0; ++i)
955	{
956	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
957	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
958	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
959	}
960	}
961	#endif
962
963	/*****************************************************************************/	1047	/*****************************************************************************/
964		1048
		1049	/* associate signal watchers to a signal signal */
965	typedef struct	1050	typedef struct
966	{	1051	{
967	WL head;	1052	WL head;
968	EV_ATOMIC_T gotsig;	1053	EV_ATOMIC_T gotsig;
969	} ANSIG;	1054	} ANSIG;
…		…
971	static ANSIG *signals;	1056	static ANSIG *signals;
972	static int signalmax;	1057	static int signalmax;
973		1058
974	static EV_ATOMIC_T gotsig;	1059	static EV_ATOMIC_T gotsig;
975		1060
976	void inline_size
977	signals_init (ANSIG *base, int count)
978	{
979	while (count--)
980	{
981	base->head = 0;
982	base->gotsig = 0;
983
984	++base;
985	}
986	}
987
988	/*****************************************************************************/	1061	/*****************************************************************************/
989		1062
990	void inline_speed	1063	/* used to prepare libev internal fd's */
		1064	/* this is not fork-safe */
		1065	inline_speed void
991	fd_intern (int fd)	1066	fd_intern (int fd)
992	{	1067	{
993	#ifdef _WIN32	1068	#ifdef _WIN32
994	int arg = 1;	1069	unsigned long arg = 1;
995	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1070	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
996	#else	1071	#else
997	fcntl (fd, F_SETFD, FD_CLOEXEC);	1072	fcntl (fd, F_SETFD, FD_CLOEXEC);
998	fcntl (fd, F_SETFL, O_NONBLOCK);	1073	fcntl (fd, F_SETFL, O_NONBLOCK);
999	#endif	1074	#endif
1000	}	1075	}
1001		1076
1002	static void noinline	1077	static void noinline
1003	evpipe_init (EV_P)	1078	evpipe_init (EV_P)
1004	{	1079	{
1005	if (!ev_is_active (&pipeev))	1080	if (!ev_is_active (&pipe_w))
1006	{	1081	{
1007	#if EV_USE_EVENTFD	1082	#if EV_USE_EVENTFD
1008	if ((evfd = eventfd (0, 0)) >= 0)	1083	if ((evfd = eventfd (0, 0)) >= 0)
1009	{	1084	{
1010	evpipe [0] = -1;	1085	evpipe [0] = -1;
1011	fd_intern (evfd);	1086	fd_intern (evfd);
1012	ev_io_set (&pipeev, evfd, EV_READ);	1087	ev_io_set (&pipe_w, evfd, EV_READ);
1013	}	1088	}
1014	else	1089	else
1015	#endif	1090	#endif
1016	{	1091	{
1017	while (pipe (evpipe))	1092	while (pipe (evpipe))
1018	syserr ("(libev) error creating signal/async pipe");	1093	ev_syserr ("(libev) error creating signal/async pipe");
1019		1094
1020	fd_intern (evpipe [0]);	1095	fd_intern (evpipe [0]);
1021	fd_intern (evpipe [1]);	1096	fd_intern (evpipe [1]);
1022	ev_io_set (&pipeev, evpipe [0], EV_READ);	1097	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1023	}	1098	}
1024		1099
1025	ev_io_start (EV_A_ &pipeev);	1100	ev_io_start (EV_A_ &pipe_w);
1026	ev_unref (EV_A); /* watcher should not keep loop alive */	1101	ev_unref (EV_A); /* watcher should not keep loop alive */
1027	}	1102	}
1028	}	1103	}
1029		1104
1030	void inline_size	1105	inline_size void
1031	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1106	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1032	{	1107	{
1033	if (!*flag)	1108	if (!*flag)
1034	{	1109	{
1035	int old_errno = errno; /* save errno because write might clobber it */	1110	int old_errno = errno; /* save errno because write might clobber it */
…		…
1048		1123
1049	errno = old_errno;	1124	errno = old_errno;
1050	}	1125	}
1051	}	1126	}
1052		1127
		1128	/* called whenever the libev signal pipe */
		1129	/* got some events (signal, async) */
1053	static void	1130	static void
1054	pipecb (EV_P_ ev_io *iow, int revents)	1131	pipecb (EV_P_ ev_io *iow, int revents)
1055	{	1132	{
1056	#if EV_USE_EVENTFD	1133	#if EV_USE_EVENTFD
1057	if (evfd >= 0)	1134	if (evfd >= 0)
…		…
1113	ev_feed_signal_event (EV_P_ int signum)	1190	ev_feed_signal_event (EV_P_ int signum)
1114	{	1191	{
1115	WL w;	1192	WL w;
1116		1193
1117	#if EV_MULTIPLICITY	1194	#if EV_MULTIPLICITY
1118	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1195	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1119	#endif	1196	#endif
1120		1197
1121	--signum;	1198	--signum;
1122		1199
1123	if (signum < 0 || signum >= signalmax)	1200	if (signum < 0 || signum >= signalmax)
…		…
1139		1216
1140	#ifndef WIFCONTINUED	1217	#ifndef WIFCONTINUED
1141	# define WIFCONTINUED(status) 0	1218	# define WIFCONTINUED(status) 0
1142	#endif	1219	#endif
1143		1220
1144	void inline_speed	1221	/* handle a single child status event */
		1222	inline_speed void
1145	child_reap (EV_P_ int chain, int pid, int status)	1223	child_reap (EV_P_ int chain, int pid, int status)
1146	{	1224	{
1147	ev_child *w;	1225	ev_child *w;
1148	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1226	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1149		1227
…		…
1162		1240
1163	#ifndef WCONTINUED	1241	#ifndef WCONTINUED
1164	# define WCONTINUED 0	1242	# define WCONTINUED 0
1165	#endif	1243	#endif
1166		1244
		1245	/* called on sigchld etc., calls waitpid */
1167	static void	1246	static void
1168	childcb (EV_P_ ev_signal *sw, int revents)	1247	childcb (EV_P_ ev_signal *sw, int revents)
1169	{	1248	{
1170	int pid, status;	1249	int pid, status;
1171		1250
…		…
1252	/* kqueue is borked on everything but netbsd apparently */	1331	/* kqueue is borked on everything but netbsd apparently */
1253	/* it usually doesn't work correctly on anything but sockets and pipes */	1332	/* it usually doesn't work correctly on anything but sockets and pipes */
1254	flags &= ~EVBACKEND_KQUEUE;	1333	flags &= ~EVBACKEND_KQUEUE;
1255	#endif	1334	#endif
1256	#ifdef __APPLE__	1335	#ifdef __APPLE__
1257	// flags &= ~EVBACKEND_KQUEUE; for documentation	1336	/* only select works correctly on that "unix-certified" platform */
1258	flags &= ~EVBACKEND_POLL;	1337	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1338	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1259	#endif	1339	#endif
1260		1340
1261	return flags;	1341	return flags;
1262	}	1342	}
1263		1343
…		…
1283	ev_loop_count (EV_P)	1363	ev_loop_count (EV_P)
1284	{	1364	{
1285	return loop_count;	1365	return loop_count;
1286	}	1366	}
1287		1367
		1368	unsigned int
		1369	ev_loop_depth (EV_P)
		1370	{
		1371	return loop_depth;
		1372	}
		1373
1288	void	1374	void
1289	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1375	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1290	{	1376	{
1291	io_blocktime = interval;	1377	io_blocktime = interval;
1292	}	1378	}
…		…
1295	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1381	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1296	{	1382	{
1297	timeout_blocktime = interval;	1383	timeout_blocktime = interval;
1298	}	1384	}
1299		1385
		1386	/* initialise a loop structure, must be zero-initialised */
1300	static void noinline	1387	static void noinline
1301	loop_init (EV_P_ unsigned int flags)	1388	loop_init (EV_P_ unsigned int flags)
1302	{	1389	{
1303	if (!backend)	1390	if (!backend)
1304	{	1391	{
		1392	#if EV_USE_REALTIME
		1393	if (!have_realtime)
		1394	{
		1395	struct timespec ts;
		1396
		1397	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1398	have_realtime = 1;
		1399	}
		1400	#endif
		1401
1305	#if EV_USE_MONOTONIC	1402	#if EV_USE_MONOTONIC
		1403	if (!have_monotonic)
1306	{	1404	{
1307	struct timespec ts;	1405	struct timespec ts;
		1406
1308	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1407	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1309	have_monotonic = 1;	1408	have_monotonic = 1;
1310	}	1409	}
1311	#endif	1410	#endif
1312		1411
1313	ev_rt_now = ev_time ();	1412	ev_rt_now = ev_time ();
1314	mn_now = get_clock ();	1413	mn_now = get_clock ();
1315	now_floor = mn_now;	1414	now_floor = mn_now;
…		…
1352	#endif	1451	#endif
1353	#if EV_USE_SELECT	1452	#if EV_USE_SELECT
1354	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1453	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1355	#endif	1454	#endif
1356		1455
		1456	ev_prepare_init (&pending_w, pendingcb);
		1457
1357	ev_init (&pipeev, pipecb);	1458	ev_init (&pipe_w, pipecb);
1358	ev_set_priority (&pipeev, EV_MAXPRI);	1459	ev_set_priority (&pipe_w, EV_MAXPRI);
1359	}	1460	}
1360	}	1461	}
1361		1462
		1463	/* free up a loop structure */
1362	static void noinline	1464	static void noinline
1363	loop_destroy (EV_P)	1465	loop_destroy (EV_P)
1364	{	1466	{
1365	int i;	1467	int i;
1366		1468
1367	if (ev_is_active (&pipeev))	1469	if (ev_is_active (&pipe_w))
1368	{	1470	{
1369	ev_ref (EV_A); /* signal watcher */	1471	ev_ref (EV_A); /* signal watcher */
1370	ev_io_stop (EV_A_ &pipeev);	1472	ev_io_stop (EV_A_ &pipe_w);
1371		1473
1372	#if EV_USE_EVENTFD	1474	#if EV_USE_EVENTFD
1373	if (evfd >= 0)	1475	if (evfd >= 0)
1374	close (evfd);	1476	close (evfd);
1375	#endif	1477	#endif
…		…
1414	}	1516	}
1415		1517
1416	ev_free (anfds); anfdmax = 0;	1518	ev_free (anfds); anfdmax = 0;
1417		1519
1418	/* have to use the microsoft-never-gets-it-right macro */	1520	/* have to use the microsoft-never-gets-it-right macro */
		1521	array_free (rfeed, EMPTY);
1419	array_free (fdchange, EMPTY);	1522	array_free (fdchange, EMPTY);
1420	array_free (timer, EMPTY);	1523	array_free (timer, EMPTY);
1421	#if EV_PERIODIC_ENABLE	1524	#if EV_PERIODIC_ENABLE
1422	array_free (periodic, EMPTY);	1525	array_free (periodic, EMPTY);
1423	#endif	1526	#endif
…		…
1432		1535
1433	backend = 0;	1536	backend = 0;
1434	}	1537	}
1435		1538
1436	#if EV_USE_INOTIFY	1539	#if EV_USE_INOTIFY
1437	void inline_size infy_fork (EV_P);	1540	inline_size void infy_fork (EV_P);
1438	#endif	1541	#endif
1439		1542
1440	void inline_size	1543	inline_size void
1441	loop_fork (EV_P)	1544	loop_fork (EV_P)
1442	{	1545	{
1443	#if EV_USE_PORT	1546	#if EV_USE_PORT
1444	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1547	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1445	#endif	1548	#endif
…		…
1451	#endif	1554	#endif
1452	#if EV_USE_INOTIFY	1555	#if EV_USE_INOTIFY
1453	infy_fork (EV_A);	1556	infy_fork (EV_A);
1454	#endif	1557	#endif
1455		1558
1456	if (ev_is_active (&pipeev))	1559	if (ev_is_active (&pipe_w))
1457	{	1560	{
1458	/* this "locks" the handlers against writing to the pipe */	1561	/* this "locks" the handlers against writing to the pipe */
1459	/* while we modify the fd vars */	1562	/* while we modify the fd vars */
1460	gotsig = 1;	1563	gotsig = 1;
1461	#if EV_ASYNC_ENABLE	1564	#if EV_ASYNC_ENABLE
1462	gotasync = 1;	1565	gotasync = 1;
1463	#endif	1566	#endif
1464		1567
1465	ev_ref (EV_A);	1568	ev_ref (EV_A);
1466	ev_io_stop (EV_A_ &pipeev);	1569	ev_io_stop (EV_A_ &pipe_w);
1467		1570
1468	#if EV_USE_EVENTFD	1571	#if EV_USE_EVENTFD
1469	if (evfd >= 0)	1572	if (evfd >= 0)
1470	close (evfd);	1573	close (evfd);
1471	#endif	1574	#endif
…		…
1476	close (evpipe [1]);	1579	close (evpipe [1]);
1477	}	1580	}
1478		1581
1479	evpipe_init (EV_A);	1582	evpipe_init (EV_A);
1480	/* now iterate over everything, in case we missed something */	1583	/* now iterate over everything, in case we missed something */
1481	pipecb (EV_A_ &pipeev, EV_READ);	1584	pipecb (EV_A_ &pipe_w, EV_READ);
1482	}	1585	}
1483		1586
1484	postfork = 0;	1587	postfork = 0;
1485	}	1588	}
1486		1589
…		…
1513	{	1616	{
1514	postfork = 1; /* must be in line with ev_default_fork */	1617	postfork = 1; /* must be in line with ev_default_fork */
1515	}	1618	}
1516		1619
1517	#if EV_VERIFY	1620	#if EV_VERIFY
1518	static void	1621	static void noinline
		1622	verify_watcher (EV_P_ W w)
		1623	{
		1624	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1625
		1626	if (w->pending)
		1627	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1628	}
		1629
		1630	static void noinline
		1631	verify_heap (EV_P_ ANHE *heap, int N)
		1632	{
		1633	int i;
		1634
		1635	for (i = HEAP0; i < N + HEAP0; ++i)
		1636	{
		1637	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1638	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1639	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1640
		1641	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1642	}
		1643	}
		1644
		1645	static void noinline
1519	array_check (W **ws, int cnt)	1646	array_verify (EV_P_ W *ws, int cnt)
1520	{	1647	{
1521	while (cnt--)	1648	while (cnt--)
		1649	{
1522	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1650	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1651	verify_watcher (EV_A_ ws [cnt]);
		1652	}
1523	}	1653	}
1524	#endif	1654	#endif
1525		1655
1526	void	1656	void
1527	ev_loop_verify (EV_P)	1657	ev_loop_verify (EV_P)
1528	{	1658	{
1529	#if EV_VERIFY	1659	#if EV_VERIFY
1530	int i;	1660	int i;
		1661	WL w;
1531		1662
		1663	assert (activecnt >= -1);
		1664
		1665	assert (fdchangemax >= fdchangecnt);
		1666	for (i = 0; i < fdchangecnt; ++i)
		1667	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1668
		1669	assert (anfdmax >= 0);
		1670	for (i = 0; i < anfdmax; ++i)
		1671	for (w = anfds [i].head; w; w = w->next)
		1672	{
		1673	verify_watcher (EV_A_ (W)w);
		1674	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1675	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1676	}
		1677
		1678	assert (timermax >= timercnt);
1532	checkheap (timers, timercnt);	1679	verify_heap (EV_A_ timers, timercnt);
		1680
1533	#if EV_PERIODIC_ENABLE	1681	#if EV_PERIODIC_ENABLE
		1682	assert (periodicmax >= periodiccnt);
1534	checkheap (periodics, periodiccnt);	1683	verify_heap (EV_A_ periodics, periodiccnt);
1535	#endif	1684	#endif
1536		1685
		1686	for (i = NUMPRI; i--; )
		1687	{
		1688	assert (pendingmax [i] >= pendingcnt [i]);
1537	#if EV_IDLE_ENABLE	1689	#if EV_IDLE_ENABLE
1538	for (i = NUMPRI; i--; )	1690	assert (idleall >= 0);
		1691	assert (idlemax [i] >= idlecnt [i]);
1539	array_check ((W **)idles [i], idlecnt [i]);	1692	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1540	#endif	1693	#endif
		1694	}
		1695
1541	#if EV_FORK_ENABLE	1696	#if EV_FORK_ENABLE
		1697	assert (forkmax >= forkcnt);
1542	array_check ((W **)forks, forkcnt);	1698	array_verify (EV_A_ (W *)forks, forkcnt);
1543	#endif	1699	#endif
		1700
1544	#if EV_ASYNC_ENABLE	1701	#if EV_ASYNC_ENABLE
		1702	assert (asyncmax >= asynccnt);
1545	array_check ((W **)asyncs, asynccnt);	1703	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1704	#endif
		1705
		1706	assert (preparemax >= preparecnt);
		1707	array_verify (EV_A_ (W *)prepares, preparecnt);
		1708
		1709	assert (checkmax >= checkcnt);
		1710	array_verify (EV_A_ (W *)checks, checkcnt);
		1711
		1712	# if 0
		1713	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1714	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1546	#endif	1715	# endif
1547	array_check ((W **)prepares, preparecnt);
1548	array_check ((W **)checks, checkcnt);
1549	#endif	1716	#endif
1550	}	1717	}
1551		1718
1552	#endif /* multiplicity */	1719	#endif /* multiplicity */
1553		1720
…		…
1590	{	1757	{
1591	#if EV_MULTIPLICITY	1758	#if EV_MULTIPLICITY
1592	struct ev_loop *loop = ev_default_loop_ptr;	1759	struct ev_loop *loop = ev_default_loop_ptr;
1593	#endif	1760	#endif
1594		1761
		1762	ev_default_loop_ptr = 0;
		1763
1595	#ifndef _WIN32	1764	#ifndef _WIN32
1596	ev_ref (EV_A); /* child watcher */	1765	ev_ref (EV_A); /* child watcher */
1597	ev_signal_stop (EV_A_ &childev);	1766	ev_signal_stop (EV_A_ &childev);
1598	#endif	1767	#endif
1599		1768
…		…
1605	{	1774	{
1606	#if EV_MULTIPLICITY	1775	#if EV_MULTIPLICITY
1607	struct ev_loop *loop = ev_default_loop_ptr;	1776	struct ev_loop *loop = ev_default_loop_ptr;
1608	#endif	1777	#endif
1609		1778
1610	if (backend)
1611	postfork = 1; /* must be in line with ev_loop_fork */	1779	postfork = 1; /* must be in line with ev_loop_fork */
1612	}	1780	}
1613		1781
1614	/*****************************************************************************/	1782	/*****************************************************************************/
1615		1783
1616	void	1784	void
1617	ev_invoke (EV_P_ void *w, int revents)	1785	ev_invoke (EV_P_ void *w, int revents)
1618	{	1786	{
1619	EV_CB_INVOKE ((W)w, revents);	1787	EV_CB_INVOKE ((W)w, revents);
1620	}	1788	}
1621		1789
1622	void inline_speed	1790	inline_speed void
1623	call_pending (EV_P)	1791	call_pending (EV_P)
1624	{	1792	{
1625	int pri;	1793	int pri;
1626		1794
1627	for (pri = NUMPRI; pri--; )	1795	for (pri = NUMPRI; pri--; )
1628	while (pendingcnt [pri])	1796	while (pendingcnt [pri])
1629	{	1797	{
1630	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1798	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631		1799
1632	if (expect_true (p->w))
1633	{
1634	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1800	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1801	/* ^ this is no longer true, as pending_w could be here */
1635		1802
1636	p->w->pending = 0;	1803	p->w->pending = 0;
1637	EV_CB_INVOKE (p->w, p->events);	1804	EV_CB_INVOKE (p->w, p->events);
1638	EV_FREQUENT_CHECK;	1805	EV_FREQUENT_CHECK;
1639	}
1640	}	1806	}
1641	}	1807	}
1642		1808
1643	#if EV_IDLE_ENABLE	1809	#if EV_IDLE_ENABLE
1644	void inline_size	1810	/* make idle watchers pending. this handles the "call-idle */
		1811	/* only when higher priorities are idle" logic */
		1812	inline_size void
1645	idle_reify (EV_P)	1813	idle_reify (EV_P)
1646	{	1814	{
1647	if (expect_false (idleall))	1815	if (expect_false (idleall))
1648	{	1816	{
1649	int pri;	1817	int pri;
…		…
1661	}	1829	}
1662	}	1830	}
1663	}	1831	}
1664	#endif	1832	#endif
1665		1833
1666	void inline_size	1834	/* make timers pending */
		1835	inline_size void
1667	timers_reify (EV_P)	1836	timers_reify (EV_P)
1668	{	1837	{
1669	EV_FREQUENT_CHECK;	1838	EV_FREQUENT_CHECK;
1670		1839
1671	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1840	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1672	{	1841	{
1673	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1842	do
1674
1675	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1676
1677	/* first reschedule or stop timer */
1678	if (w->repeat)
1679	{	1843	{
		1844	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1845
		1846	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1847
		1848	/* first reschedule or stop timer */
		1849	if (w->repeat)
		1850	{
1680	ev_at (w) += w->repeat;	1851	ev_at (w) += w->repeat;
1681	if (ev_at (w) < mn_now)	1852	if (ev_at (w) < mn_now)
1682	ev_at (w) = mn_now;	1853	ev_at (w) = mn_now;
1683		1854
1684	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1855	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1685		1856
1686	ANHE_at_cache (timers [HEAP0]);	1857	ANHE_at_cache (timers [HEAP0]);
1687	downheap (timers, timercnt, HEAP0);	1858	downheap (timers, timercnt, HEAP0);
		1859	}
		1860	else
		1861	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1862
		1863	EV_FREQUENT_CHECK;
		1864	feed_reverse (EV_A_ (W)w);
1688	}	1865	}
1689	else	1866	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1690	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1691		1867
1692	EV_FREQUENT_CHECK;
1693	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1868	feed_reverse_done (EV_A_ EV_TIMEOUT);
1694	}	1869	}
1695	}	1870	}
1696		1871
1697	#if EV_PERIODIC_ENABLE	1872	#if EV_PERIODIC_ENABLE
1698	void inline_size	1873	/* make periodics pending */
		1874	inline_size void
1699	periodics_reify (EV_P)	1875	periodics_reify (EV_P)
1700	{	1876	{
1701	EV_FREQUENT_CHECK;	1877	EV_FREQUENT_CHECK;
1702		1878
1703	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1879	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704	{	1880	{
1705	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1881	int feed_count = 0;
1706		1882
1707	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1883	do
1708
1709	/* first reschedule or stop timer */
1710	if (w->reschedule_cb)
1711	{	1884	{
		1885	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1886
		1887	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1888
		1889	/* first reschedule or stop timer */
		1890	if (w->reschedule_cb)
		1891	{
1712	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1892	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713		1893
1714	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1894	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715		1895
1716	ANHE_at_cache (periodics [HEAP0]);	1896	ANHE_at_cache (periodics [HEAP0]);
1717	downheap (periodics, periodiccnt, HEAP0);	1897	downheap (periodics, periodiccnt, HEAP0);
		1898	}
		1899	else if (w->interval)
		1900	{
		1901	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1902	/* if next trigger time is not sufficiently in the future, put it there */
		1903	/* this might happen because of floating point inexactness */
		1904	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1905	{
		1906	ev_at (w) += w->interval;
		1907
		1908	/* if interval is unreasonably low we might still have a time in the past */
		1909	/* so correct this. this will make the periodic very inexact, but the user */
		1910	/* has effectively asked to get triggered more often than possible */
		1911	if (ev_at (w) < ev_rt_now)
		1912	ev_at (w) = ev_rt_now;
		1913	}
		1914
		1915	ANHE_at_cache (periodics [HEAP0]);
		1916	downheap (periodics, periodiccnt, HEAP0);
		1917	}
		1918	else
		1919	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1920
		1921	EV_FREQUENT_CHECK;
		1922	feed_reverse (EV_A_ (W)w);
1718	}	1923	}
1719	else if (w->interval)	1924	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1720	{
1721	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1722	/* if next trigger time is not sufficiently in the future, put it there */
1723	/* this might happen because of floating point inexactness */
1724	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1725	{
1726	ev_at (w) += w->interval;
1727		1925
1728	/* if interval is unreasonably low we might still have a time in the past */
1729	/* so correct this. this will make the periodic very inexact, but the user */
1730	/* has effectively asked to get triggered more often than possible */
1731	if (ev_at (w) < ev_rt_now)
1732	ev_at (w) = ev_rt_now;
1733	}
1734
1735	ANHE_at_cache (periodics [HEAP0]);
1736	downheap (periodics, periodiccnt, HEAP0);
1737	}
1738	else
1739	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1740
1741	EV_FREQUENT_CHECK;
1742	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1926	feed_reverse_done (EV_A_ EV_PERIODIC);
1743	}	1927	}
1744	}	1928	}
1745		1929
		1930	/* simply recalculate all periodics */
		1931	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1746	static void noinline	1932	static void noinline
1747	periodics_reschedule (EV_P)	1933	periodics_reschedule (EV_P)
1748	{	1934	{
1749	int i;	1935	int i;
1750		1936
…		…
1763		1949
1764	reheap (periodics, periodiccnt);	1950	reheap (periodics, periodiccnt);
1765	}	1951	}
1766	#endif	1952	#endif
1767		1953
1768	void inline_speed	1954	/* adjust all timers by a given offset */
		1955	static void noinline
		1956	timers_reschedule (EV_P_ ev_tstamp adjust)
		1957	{
		1958	int i;
		1959
		1960	for (i = 0; i < timercnt; ++i)
		1961	{
		1962	ANHE *he = timers + i + HEAP0;
		1963	ANHE_w (*he)->at += adjust;
		1964	ANHE_at_cache (*he);
		1965	}
		1966	}
		1967
		1968	/* fetch new monotonic and realtime times from the kernel */
		1969	/* also detetc if there was a timejump, and act accordingly */
		1970	inline_speed void
1769	time_update (EV_P_ ev_tstamp max_block)	1971	time_update (EV_P_ ev_tstamp max_block)
1770	{	1972	{
1771	int i;
1772
1773	#if EV_USE_MONOTONIC	1973	#if EV_USE_MONOTONIC
1774	if (expect_true (have_monotonic))	1974	if (expect_true (have_monotonic))
1775	{	1975	{
		1976	int i;
1776	ev_tstamp odiff = rtmn_diff;	1977	ev_tstamp odiff = rtmn_diff;
1777		1978
1778	mn_now = get_clock ();	1979	mn_now = get_clock ();
1779		1980
1780	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1981	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1806	ev_rt_now = ev_time ();	2007	ev_rt_now = ev_time ();
1807	mn_now = get_clock ();	2008	mn_now = get_clock ();
1808	now_floor = mn_now;	2009	now_floor = mn_now;
1809	}	2010	}
1810		2011
		2012	/* no timer adjustment, as the monotonic clock doesn't jump */
		2013	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811	# if EV_PERIODIC_ENABLE	2014	# if EV_PERIODIC_ENABLE
1812	periodics_reschedule (EV_A);	2015	periodics_reschedule (EV_A);
1813	# endif	2016	# endif
1814	/* no timer adjustment, as the monotonic clock doesn't jump */
1815	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1816	}	2017	}
1817	else	2018	else
1818	#endif	2019	#endif
1819	{	2020	{
1820	ev_rt_now = ev_time ();	2021	ev_rt_now = ev_time ();
1821		2022
1822	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2023	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1823	{	2024	{
		2025	/* adjust timers. this is easy, as the offset is the same for all of them */
		2026	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1824	#if EV_PERIODIC_ENABLE	2027	#if EV_PERIODIC_ENABLE
1825	periodics_reschedule (EV_A);	2028	periodics_reschedule (EV_A);
1826	#endif	2029	#endif
1827	/* adjust timers. this is easy, as the offset is the same for all of them */
1828	for (i = 0; i < timercnt; ++i)
1829	{
1830	ANHE *he = timers + i + HEAP0;
1831	ANHE_w (*he)->at += ev_rt_now - mn_now;
1832	ANHE_at_cache (*he);
1833	}
1834	}	2030	}
1835		2031
1836	mn_now = ev_rt_now;	2032	mn_now = ev_rt_now;
1837	}	2033	}
1838	}	2034	}
1839		2035
1840	void	2036	void
1841	ev_ref (EV_P)
1842	{
1843	++activecnt;
1844	}
1845
1846	void
1847	ev_unref (EV_P)
1848	{
1849	--activecnt;
1850	}
1851
1852	static int loop_done;
1853
1854	void
1855	ev_loop (EV_P_ int flags)	2037	ev_loop (EV_P_ int flags)
1856	{	2038	{
		2039	++loop_depth;
		2040
1857	loop_done = EVUNLOOP_CANCEL;	2041	loop_done = EVUNLOOP_CANCEL;
1858		2042
1859	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2043	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1860		2044
1861	do	2045	do
…		…
1888	{	2072	{
1889	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2073	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1890	call_pending (EV_A);	2074	call_pending (EV_A);
1891	}	2075	}
1892		2076
1893	if (expect_false (!activecnt))
1894	break;
1895
1896	/* we might have forked, so reify kernel state if necessary */	2077	/* we might have forked, so reify kernel state if necessary */
1897	if (expect_false (postfork))	2078	if (expect_false (postfork))
1898	loop_fork (EV_A);	2079	loop_fork (EV_A);
1899		2080
1900	/* update fd-related kernel structures */	2081	/* update fd-related kernel structures */
…		…
1905	ev_tstamp waittime = 0.;	2086	ev_tstamp waittime = 0.;
1906	ev_tstamp sleeptime = 0.;	2087	ev_tstamp sleeptime = 0.;
1907		2088
1908	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2089	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1909	{	2090	{
		2091	/* remember old timestamp for io_blocktime calculation */
		2092	ev_tstamp prev_mn_now = mn_now;
		2093
1910	/* update time to cancel out callback processing overhead */	2094	/* update time to cancel out callback processing overhead */
1911	time_update (EV_A_ 1e100);	2095	time_update (EV_A_ 1e100);
1912		2096
1913	waittime = MAX_BLOCKTIME;	2097	waittime = MAX_BLOCKTIME;
1914		2098
…		…
1924	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2108	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1925	if (waittime > to) waittime = to;	2109	if (waittime > to) waittime = to;
1926	}	2110	}
1927	#endif	2111	#endif
1928		2112
		2113	/* don't let timeouts decrease the waittime below timeout_blocktime */
1929	if (expect_false (waittime < timeout_blocktime))	2114	if (expect_false (waittime < timeout_blocktime))
1930	waittime = timeout_blocktime;	2115	waittime = timeout_blocktime;
1931		2116
1932	sleeptime = waittime - backend_fudge;	2117	/* extra check because io_blocktime is commonly 0 */
1933
1934	if (expect_true (sleeptime > io_blocktime))	2118	if (expect_false (io_blocktime))
1935	sleeptime = io_blocktime;
1936
1937	if (sleeptime)
1938	{	2119	{
		2120	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2121
		2122	if (sleeptime > waittime - backend_fudge)
		2123	sleeptime = waittime - backend_fudge;
		2124
		2125	if (expect_true (sleeptime > 0.))
		2126	{
1939	ev_sleep (sleeptime);	2127	ev_sleep (sleeptime);
1940	waittime -= sleeptime;	2128	waittime -= sleeptime;
		2129	}
1941	}	2130	}
1942	}	2131	}
1943		2132
1944	++loop_count;	2133	++loop_count;
1945	backend_poll (EV_A_ waittime);	2134	backend_poll (EV_A_ waittime);
…		…
1971	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2160	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1972	));	2161	));
1973		2162
1974	if (loop_done == EVUNLOOP_ONE)	2163	if (loop_done == EVUNLOOP_ONE)
1975	loop_done = EVUNLOOP_CANCEL;	2164	loop_done = EVUNLOOP_CANCEL;
		2165
		2166	--loop_depth;
1976	}	2167	}
1977		2168
1978	void	2169	void
1979	ev_unloop (EV_P_ int how)	2170	ev_unloop (EV_P_ int how)
1980	{	2171	{
1981	loop_done = how;	2172	loop_done = how;
1982	}	2173	}
1983		2174
		2175	void
		2176	ev_ref (EV_P)
		2177	{
		2178	++activecnt;
		2179	}
		2180
		2181	void
		2182	ev_unref (EV_P)
		2183	{
		2184	--activecnt;
		2185	}
		2186
		2187	void
		2188	ev_now_update (EV_P)
		2189	{
		2190	time_update (EV_A_ 1e100);
		2191	}
		2192
		2193	void
		2194	ev_suspend (EV_P)
		2195	{
		2196	ev_now_update (EV_A);
		2197	}
		2198
		2199	void
		2200	ev_resume (EV_P)
		2201	{
		2202	ev_tstamp mn_prev = mn_now;
		2203
		2204	ev_now_update (EV_A);
		2205	timers_reschedule (EV_A_ mn_now - mn_prev);
		2206	#if EV_PERIODIC_ENABLE
		2207	/* TODO: really do this? */
		2208	periodics_reschedule (EV_A);
		2209	#endif
		2210	}
		2211
1984	/*****************************************************************************/	2212	/*****************************************************************************/
		2213	/* singly-linked list management, used when the expected list length is short */
1985		2214
1986	void inline_size	2215	inline_size void
1987	wlist_add (WL *head, WL elem)	2216	wlist_add (WL *head, WL elem)
1988	{	2217	{
1989	elem->next = *head;	2218	elem->next = *head;
1990	*head = elem;	2219	*head = elem;
1991	}	2220	}
1992		2221
1993	void inline_size	2222	inline_size void
1994	wlist_del (WL *head, WL elem)	2223	wlist_del (WL *head, WL elem)
1995	{	2224	{
1996	while (*head)	2225	while (*head)
1997	{	2226	{
1998	if (*head == elem)	2227	if (*head == elem)
…		…
2003		2232
2004	head = &(*head)->next;	2233	head = &(*head)->next;
2005	}	2234	}
2006	}	2235	}
2007		2236
2008	void inline_speed	2237	/* internal, faster, version of ev_clear_pending */
		2238	inline_speed void
2009	clear_pending (EV_P_ W w)	2239	clear_pending (EV_P_ W w)
2010	{	2240	{
2011	if (w->pending)	2241	if (w->pending)
2012	{	2242	{
2013	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2243	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2014	w->pending = 0;	2244	w->pending = 0;
2015	}	2245	}
2016	}	2246	}
2017		2247
2018	int	2248	int
…		…
2022	int pending = w_->pending;	2252	int pending = w_->pending;
2023		2253
2024	if (expect_true (pending))	2254	if (expect_true (pending))
2025	{	2255	{
2026	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2256	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2257	p->w = (W)&pending_w;
2027	w_->pending = 0;	2258	w_->pending = 0;
2028	p->w = 0;
2029	return p->events;	2259	return p->events;
2030	}	2260	}
2031	else	2261	else
2032	return 0;	2262	return 0;
2033	}	2263	}
2034		2264
2035	void inline_size	2265	inline_size void
2036	pri_adjust (EV_P_ W w)	2266	pri_adjust (EV_P_ W w)
2037	{	2267	{
2038	int pri = w->priority;	2268	int pri = ev_priority (w);
2039	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2269	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2040	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2270	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2041	w->priority = pri;	2271	ev_set_priority (w, pri);
2042	}	2272	}
2043		2273
2044	void inline_speed	2274	inline_speed void
2045	ev_start (EV_P_ W w, int active)	2275	ev_start (EV_P_ W w, int active)
2046	{	2276	{
2047	pri_adjust (EV_A_ w);	2277	pri_adjust (EV_A_ w);
2048	w->active = active;	2278	w->active = active;
2049	ev_ref (EV_A);	2279	ev_ref (EV_A);
2050	}	2280	}
2051		2281
2052	void inline_size	2282	inline_size void
2053	ev_stop (EV_P_ W w)	2283	ev_stop (EV_P_ W w)
2054	{	2284	{
2055	ev_unref (EV_A);	2285	ev_unref (EV_A);
2056	w->active = 0;	2286	w->active = 0;
2057	}	2287	}
…		…
2064	int fd = w->fd;	2294	int fd = w->fd;
2065		2295
2066	if (expect_false (ev_is_active (w)))	2296	if (expect_false (ev_is_active (w)))
2067	return;	2297	return;
2068		2298
2069	assert (("ev_io_start called with negative fd", fd >= 0));	2299	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2300	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2070		2301
2071	EV_FREQUENT_CHECK;	2302	EV_FREQUENT_CHECK;
2072		2303
2073	ev_start (EV_A_ (W)w, 1);	2304	ev_start (EV_A_ (W)w, 1);
2074	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2305	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2075	wlist_add (&anfds[fd].head, (WL)w);	2306	wlist_add (&anfds[fd].head, (WL)w);
2076		2307
2077	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2308	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2078	w->events &= ~EV_IOFDSET;	2309	w->events &= ~EV__IOFDSET;
2079		2310
2080	EV_FREQUENT_CHECK;	2311	EV_FREQUENT_CHECK;
2081	}	2312	}
2082		2313
2083	void noinline	2314	void noinline
…		…
2085	{	2316	{
2086	clear_pending (EV_A_ (W)w);	2317	clear_pending (EV_A_ (W)w);
2087	if (expect_false (!ev_is_active (w)))	2318	if (expect_false (!ev_is_active (w)))
2088	return;	2319	return;
2089		2320
2090	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2321	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2091		2322
2092	EV_FREQUENT_CHECK;	2323	EV_FREQUENT_CHECK;
2093		2324
2094	wlist_del (&anfds[w->fd].head, (WL)w);	2325	wlist_del (&anfds[w->fd].head, (WL)w);
2095	ev_stop (EV_A_ (W)w);	2326	ev_stop (EV_A_ (W)w);
…		…
2105	if (expect_false (ev_is_active (w)))	2336	if (expect_false (ev_is_active (w)))
2106	return;	2337	return;
2107		2338
2108	ev_at (w) += mn_now;	2339	ev_at (w) += mn_now;
2109		2340
2110	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2341	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2111		2342
2112	EV_FREQUENT_CHECK;	2343	EV_FREQUENT_CHECK;
2113		2344
2114	++timercnt;	2345	++timercnt;
2115	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2346	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2118	ANHE_at_cache (timers [ev_active (w)]);	2349	ANHE_at_cache (timers [ev_active (w)]);
2119	upheap (timers, ev_active (w));	2350	upheap (timers, ev_active (w));
2120		2351
2121	EV_FREQUENT_CHECK;	2352	EV_FREQUENT_CHECK;
2122		2353
2123	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2354	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2124	}	2355	}
2125		2356
2126	void noinline	2357	void noinline
2127	ev_timer_stop (EV_P_ ev_timer *w)	2358	ev_timer_stop (EV_P_ ev_timer *w)
2128	{	2359	{
…		…
2133	EV_FREQUENT_CHECK;	2364	EV_FREQUENT_CHECK;
2134		2365
2135	{	2366	{
2136	int active = ev_active (w);	2367	int active = ev_active (w);
2137		2368
2138	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2369	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2139		2370
2140	--timercnt;	2371	--timercnt;
2141		2372
2142	if (expect_true (active < timercnt + HEAP0))	2373	if (expect_true (active < timercnt + HEAP0))
2143	{	2374	{
…		…
2187		2418
2188	if (w->reschedule_cb)	2419	if (w->reschedule_cb)
2189	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2420	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2190	else if (w->interval)	2421	else if (w->interval)
2191	{	2422	{
2192	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2423	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2193	/* this formula differs from the one in periodic_reify because we do not always round up */	2424	/* this formula differs from the one in periodic_reify because we do not always round up */
2194	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2425	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2195	}	2426	}
2196	else	2427	else
2197	ev_at (w) = w->offset;	2428	ev_at (w) = w->offset;
…		…
2205	ANHE_at_cache (periodics [ev_active (w)]);	2436	ANHE_at_cache (periodics [ev_active (w)]);
2206	upheap (periodics, ev_active (w));	2437	upheap (periodics, ev_active (w));
2207		2438
2208	EV_FREQUENT_CHECK;	2439	EV_FREQUENT_CHECK;
2209		2440
2210	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2441	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2211	}	2442	}
2212		2443
2213	void noinline	2444	void noinline
2214	ev_periodic_stop (EV_P_ ev_periodic *w)	2445	ev_periodic_stop (EV_P_ ev_periodic *w)
2215	{	2446	{
…		…
2220	EV_FREQUENT_CHECK;	2451	EV_FREQUENT_CHECK;
2221		2452
2222	{	2453	{
2223	int active = ev_active (w);	2454	int active = ev_active (w);
2224		2455
2225	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2456	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2226		2457
2227	--periodiccnt;	2458	--periodiccnt;
2228		2459
2229	if (expect_true (active < periodiccnt + HEAP0))	2460	if (expect_true (active < periodiccnt + HEAP0))
2230	{	2461	{
…		…
2253		2484
2254	void noinline	2485	void noinline
2255	ev_signal_start (EV_P_ ev_signal *w)	2486	ev_signal_start (EV_P_ ev_signal *w)
2256	{	2487	{
2257	#if EV_MULTIPLICITY	2488	#if EV_MULTIPLICITY
2258	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2489	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2259	#endif	2490	#endif
2260	if (expect_false (ev_is_active (w)))	2491	if (expect_false (ev_is_active (w)))
2261	return;	2492	return;
2262		2493
2263	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2494	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2264		2495
2265	evpipe_init (EV_A);	2496	evpipe_init (EV_A);
2266		2497
2267	EV_FREQUENT_CHECK;	2498	EV_FREQUENT_CHECK;
2268		2499
…		…
2271	sigset_t full, prev;	2502	sigset_t full, prev;
2272	sigfillset (&full);	2503	sigfillset (&full);
2273	sigprocmask (SIG_SETMASK, &full, &prev);	2504	sigprocmask (SIG_SETMASK, &full, &prev);
2274	#endif	2505	#endif
2275		2506
2276	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2507	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2277		2508
2278	#ifndef _WIN32	2509	#ifndef _WIN32
2279	sigprocmask (SIG_SETMASK, &prev, 0);	2510	sigprocmask (SIG_SETMASK, &prev, 0);
2280	#endif	2511	#endif
2281	}	2512	}
…		…
2319		2550
2320	void	2551	void
2321	ev_child_start (EV_P_ ev_child *w)	2552	ev_child_start (EV_P_ ev_child *w)
2322	{	2553	{
2323	#if EV_MULTIPLICITY	2554	#if EV_MULTIPLICITY
2324	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2555	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2325	#endif	2556	#endif
2326	if (expect_false (ev_is_active (w)))	2557	if (expect_false (ev_is_active (w)))
2327	return;	2558	return;
2328		2559
2329	EV_FREQUENT_CHECK;	2560	EV_FREQUENT_CHECK;
…		…
2354	# ifdef _WIN32	2585	# ifdef _WIN32
2355	# undef lstat	2586	# undef lstat
2356	# define lstat(a,b) _stati64 (a,b)	2587	# define lstat(a,b) _stati64 (a,b)
2357	# endif	2588	# endif
2358		2589
2359	#define DEF_STAT_INTERVAL 5.0074891	2590	#define DEF_STAT_INTERVAL 5.0074891
		2591	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2360	#define MIN_STAT_INTERVAL 0.1074891	2592	#define MIN_STAT_INTERVAL 0.1074891
2361		2593
2362	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2594	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2363		2595
2364	#if EV_USE_INOTIFY	2596	#if EV_USE_INOTIFY
2365	# define EV_INOTIFY_BUFSIZE 8192	2597	# define EV_INOTIFY_BUFSIZE 8192
…		…
2369	{	2601	{
2370	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2602	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2371		2603
2372	if (w->wd < 0)	2604	if (w->wd < 0)
2373	{	2605	{
		2606	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2374	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2607	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2375		2608
2376	/* monitor some parent directory for speedup hints */	2609	/* monitor some parent directory for speedup hints */
2377	/* note that exceeding the hardcoded limit is not a correctness issue, */	2610	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2378	/* but an efficiency issue only */	2611	/* but an efficiency issue only */
2379	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2612	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2380	{	2613	{
2381	char path [4096];	2614	char path [4096];
2382	strcpy (path, w->path);	2615	strcpy (path, w->path);
…		…
2386	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2619	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2387	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2620	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2388		2621
2389	char *pend = strrchr (path, '/');	2622	char *pend = strrchr (path, '/');
2390		2623
2391	if (!pend)	2624	if (!pend || pend == path)
2392	break; /* whoops, no '/', complain to your admin */	2625	break;
2393		2626
2394	*pend = 0;	2627	*pend = 0;
2395	w->wd = inotify_add_watch (fs_fd, path, mask);	2628	w->wd = inotify_add_watch (fs_fd, path, mask);
2396	}	2629	}
2397	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2630	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2398	}	2631	}
2399	}	2632	}
2400	else
2401	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2402		2633
2403	if (w->wd >= 0)	2634	if (w->wd >= 0)
		2635	{
2404	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2636	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2637
		2638	/* now local changes will be tracked by inotify, but remote changes won't */
		2639	/* unless the filesystem it known to be local, we therefore still poll */
		2640	/* also do poll on <2.6.25, but with normal frequency */
		2641	struct statfs sfs;
		2642
		2643	if (fs_2625 && !statfs (w->path, &sfs))
		2644	if (sfs.f_type == 0x1373 /* devfs */
		2645	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2646	|| sfs.f_type == 0x3153464a /* jfs */
		2647	|| sfs.f_type == 0x52654973 /* reiser3 */
		2648	|| sfs.f_type == 0x01021994 /* tempfs */
		2649	|| sfs.f_type == 0x58465342 /* xfs */)
		2650	return;
		2651
		2652	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2653	ev_timer_again (EV_A_ &w->timer);
		2654	}
2405	}	2655	}
2406		2656
2407	static void noinline	2657	static void noinline
2408	infy_del (EV_P_ ev_stat *w)	2658	infy_del (EV_P_ ev_stat *w)
2409	{	2659	{
…		…
2423		2673
2424	static void noinline	2674	static void noinline
2425	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2675	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2426	{	2676	{
2427	if (slot < 0)	2677	if (slot < 0)
2428	/* overflow, need to check for all hahs slots */	2678	/* overflow, need to check for all hash slots */
2429	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2679	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2430	infy_wd (EV_A_ slot, wd, ev);	2680	infy_wd (EV_A_ slot, wd, ev);
2431	else	2681	else
2432	{	2682	{
2433	WL w_;	2683	WL w_;
…		…
2439		2689
2440	if (w->wd == wd || wd == -1)	2690	if (w->wd == wd || wd == -1)
2441	{	2691	{
2442	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2692	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2443	{	2693	{
		2694	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2444	w->wd = -1;	2695	w->wd = -1;
2445	infy_add (EV_A_ w); /* re-add, no matter what */	2696	infy_add (EV_A_ w); /* re-add, no matter what */
2446	}	2697	}
2447		2698
2448	stat_timer_cb (EV_A_ &w->timer, 0);	2699	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2461		2712
2462	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2713	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2463	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2714	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2464	}	2715	}
2465		2716
2466	void inline_size	2717	inline_size void
		2718	check_2625 (EV_P)
		2719	{
		2720	/* kernels < 2.6.25 are borked
		2721	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2722	*/
		2723	struct utsname buf;
		2724	int major, minor, micro;
		2725
		2726	if (uname (&buf))
		2727	return;
		2728
		2729	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2730	return;
		2731
		2732	if (major < 2
		2733	|| (major == 2 && minor < 6)
		2734	|| (major == 2 && minor == 6 && micro < 25))
		2735	return;
		2736
		2737	fs_2625 = 1;
		2738	}
		2739
		2740	inline_size void
2467	infy_init (EV_P)	2741	infy_init (EV_P)
2468	{	2742	{
2469	if (fs_fd != -2)	2743	if (fs_fd != -2)
2470	return;	2744	return;
		2745
		2746	fs_fd = -1;
		2747
		2748	check_2625 (EV_A);
2471		2749
2472	fs_fd = inotify_init ();	2750	fs_fd = inotify_init ();
2473		2751
2474	if (fs_fd >= 0)	2752	if (fs_fd >= 0)
2475	{	2753	{
…		…
2477	ev_set_priority (&fs_w, EV_MAXPRI);	2755	ev_set_priority (&fs_w, EV_MAXPRI);
2478	ev_io_start (EV_A_ &fs_w);	2756	ev_io_start (EV_A_ &fs_w);
2479	}	2757	}
2480	}	2758	}
2481		2759
2482	void inline_size	2760	inline_size void
2483	infy_fork (EV_P)	2761	infy_fork (EV_P)
2484	{	2762	{
2485	int slot;	2763	int slot;
2486		2764
2487	if (fs_fd < 0)	2765	if (fs_fd < 0)
…		…
2503	w->wd = -1;	2781	w->wd = -1;
2504		2782
2505	if (fs_fd >= 0)	2783	if (fs_fd >= 0)
2506	infy_add (EV_A_ w); /* re-add, no matter what */	2784	infy_add (EV_A_ w); /* re-add, no matter what */
2507	else	2785	else
2508	ev_timer_start (EV_A_ &w->timer);	2786	ev_timer_again (EV_A_ &w->timer);
2509	}	2787	}
2510
2511	}	2788	}
2512	}	2789	}
2513		2790
		2791	#endif
		2792
		2793	#ifdef _WIN32
		2794	# define EV_LSTAT(p,b) _stati64 (p, b)
		2795	#else
		2796	# define EV_LSTAT(p,b) lstat (p, b)
2514	#endif	2797	#endif
2515		2798
2516	void	2799	void
2517	ev_stat_stat (EV_P_ ev_stat *w)	2800	ev_stat_stat (EV_P_ ev_stat *w)
2518	{	2801	{
…		…
2545	|| w->prev.st_atime != w->attr.st_atime	2828	|| w->prev.st_atime != w->attr.st_atime
2546	|| w->prev.st_mtime != w->attr.st_mtime	2829	|| w->prev.st_mtime != w->attr.st_mtime
2547	|| w->prev.st_ctime != w->attr.st_ctime	2830	|| w->prev.st_ctime != w->attr.st_ctime
2548	) {	2831	) {
2549	#if EV_USE_INOTIFY	2832	#if EV_USE_INOTIFY
		2833	if (fs_fd >= 0)
		2834	{
2550	infy_del (EV_A_ w);	2835	infy_del (EV_A_ w);
2551	infy_add (EV_A_ w);	2836	infy_add (EV_A_ w);
2552	ev_stat_stat (EV_A_ w); /* avoid race... */	2837	ev_stat_stat (EV_A_ w); /* avoid race... */
		2838	}
2553	#endif	2839	#endif
2554		2840
2555	ev_feed_event (EV_A_ w, EV_STAT);	2841	ev_feed_event (EV_A_ w, EV_STAT);
2556	}	2842	}
2557	}	2843	}
…		…
2560	ev_stat_start (EV_P_ ev_stat *w)	2846	ev_stat_start (EV_P_ ev_stat *w)
2561	{	2847	{
2562	if (expect_false (ev_is_active (w)))	2848	if (expect_false (ev_is_active (w)))
2563	return;	2849	return;
2564		2850
2565	/* since we use memcmp, we need to clear any padding data etc. */
2566	memset (&w->prev, 0, sizeof (ev_statdata));
2567	memset (&w->attr, 0, sizeof (ev_statdata));
2568
2569	ev_stat_stat (EV_A_ w);	2851	ev_stat_stat (EV_A_ w);
2570		2852
		2853	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2571	if (w->interval < MIN_STAT_INTERVAL)	2854	w->interval = MIN_STAT_INTERVAL;
2572	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2573		2855
2574	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2856	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2575	ev_set_priority (&w->timer, ev_priority (w));	2857	ev_set_priority (&w->timer, ev_priority (w));
2576		2858
2577	#if EV_USE_INOTIFY	2859	#if EV_USE_INOTIFY
2578	infy_init (EV_A);	2860	infy_init (EV_A);
2579		2861
2580	if (fs_fd >= 0)	2862	if (fs_fd >= 0)
2581	infy_add (EV_A_ w);	2863	infy_add (EV_A_ w);
2582	else	2864	else
2583	#endif	2865	#endif
2584	ev_timer_start (EV_A_ &w->timer);	2866	ev_timer_again (EV_A_ &w->timer);
2585		2867
2586	ev_start (EV_A_ (W)w, 1);	2868	ev_start (EV_A_ (W)w, 1);
2587		2869
2588	EV_FREQUENT_CHECK;	2870	EV_FREQUENT_CHECK;
2589	}	2871	}
…		…
2759	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3041	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2760	}	3042	}
2761	}	3043	}
2762	}	3044	}
2763		3045
		3046	static void
		3047	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3048	{
		3049	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3050
		3051	ev_embed_stop (EV_A_ w);
		3052
		3053	{
		3054	struct ev_loop *loop = w->other;
		3055
		3056	ev_loop_fork (EV_A);
		3057	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3058	}
		3059
		3060	ev_embed_start (EV_A_ w);
		3061	}
		3062
2764	#if 0	3063	#if 0
2765	static void	3064	static void
2766	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3065	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2767	{	3066	{
2768	ev_idle_stop (EV_A_ idle);	3067	ev_idle_stop (EV_A_ idle);
…		…
2775	if (expect_false (ev_is_active (w)))	3074	if (expect_false (ev_is_active (w)))
2776	return;	3075	return;
2777		3076
2778	{	3077	{
2779	struct ev_loop *loop = w->other;	3078	struct ev_loop *loop = w->other;
2780	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3079	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2781	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3080	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2782	}	3081	}
2783		3082
2784	EV_FREQUENT_CHECK;	3083	EV_FREQUENT_CHECK;
2785		3084
…		…
2788		3087
2789	ev_prepare_init (&w->prepare, embed_prepare_cb);	3088	ev_prepare_init (&w->prepare, embed_prepare_cb);
2790	ev_set_priority (&w->prepare, EV_MINPRI);	3089	ev_set_priority (&w->prepare, EV_MINPRI);
2791	ev_prepare_start (EV_A_ &w->prepare);	3090	ev_prepare_start (EV_A_ &w->prepare);
2792		3091
		3092	ev_fork_init (&w->fork, embed_fork_cb);
		3093	ev_fork_start (EV_A_ &w->fork);
		3094
2793	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3095	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2794		3096
2795	ev_start (EV_A_ (W)w, 1);	3097	ev_start (EV_A_ (W)w, 1);
2796		3098
2797	EV_FREQUENT_CHECK;	3099	EV_FREQUENT_CHECK;
…		…
2804	if (expect_false (!ev_is_active (w)))	3106	if (expect_false (!ev_is_active (w)))
2805	return;	3107	return;
2806		3108
2807	EV_FREQUENT_CHECK;	3109	EV_FREQUENT_CHECK;
2808		3110
2809	ev_io_stop (EV_A_ &w->io);	3111	ev_io_stop (EV_A_ &w->io);
2810	ev_prepare_stop (EV_A_ &w->prepare);	3112	ev_prepare_stop (EV_A_ &w->prepare);
2811		3113	ev_fork_stop (EV_A_ &w->fork);
2812	ev_stop (EV_A_ (W)w);
2813		3114
2814	EV_FREQUENT_CHECK;	3115	EV_FREQUENT_CHECK;
2815	}	3116	}
2816	#endif	3117	#endif
2817		3118
…		…
2914	once_cb (EV_P_ struct ev_once *once, int revents)	3215	once_cb (EV_P_ struct ev_once *once, int revents)
2915	{	3216	{
2916	void (*cb)(int revents, void *arg) = once->cb;	3217	void (*cb)(int revents, void *arg) = once->cb;
2917	void *arg = once->arg;	3218	void *arg = once->arg;
2918		3219
2919	ev_io_stop (EV_A_ &once->io);	3220	ev_io_stop (EV_A_ &once->io);
2920	ev_timer_stop (EV_A_ &once->to);	3221	ev_timer_stop (EV_A_ &once->to);
2921	ev_free (once);	3222	ev_free (once);
2922		3223
2923	cb (revents, arg);	3224	cb (revents, arg);
2924	}	3225	}
2925		3226
2926	static void	3227	static void
2927	once_cb_io (EV_P_ ev_io *w, int revents)	3228	once_cb_io (EV_P_ ev_io *w, int revents)
2928	{	3229	{
2929	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3230	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3231
		3232	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2930	}	3233	}
2931		3234
2932	static void	3235	static void
2933	once_cb_to (EV_P_ ev_timer *w, int revents)	3236	once_cb_to (EV_P_ ev_timer *w, int revents)
2934	{	3237	{
2935	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3238	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3239
		3240	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2936	}	3241	}
2937		3242
2938	void	3243	void
2939	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3244	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2940	{	3245	{
…		…
2962	ev_timer_set (&once->to, timeout, 0.);	3267	ev_timer_set (&once->to, timeout, 0.);
2963	ev_timer_start (EV_A_ &once->to);	3268	ev_timer_start (EV_A_ &once->to);
2964	}	3269	}
2965	}	3270	}
2966		3271
		3272	/*****************************************************************************/
		3273
		3274	#if EV_WALK_ENABLE
		3275	void
		3276	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3277	{
		3278	int i, j;
		3279	ev_watcher_list *wl, *wn;
		3280
		3281	if (types & (EV_IO | EV_EMBED))
		3282	for (i = 0; i < anfdmax; ++i)
		3283	for (wl = anfds [i].head; wl; )
		3284	{
		3285	wn = wl->next;
		3286
		3287	#if EV_EMBED_ENABLE
		3288	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3289	{
		3290	if (types & EV_EMBED)
		3291	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3292	}
		3293	else
		3294	#endif
		3295	#if EV_USE_INOTIFY
		3296	if (ev_cb ((ev_io *)wl) == infy_cb)
		3297	;
		3298	else
		3299	#endif
		3300	if ((ev_io *)wl != &pipe_w)
		3301	if (types & EV_IO)
		3302	cb (EV_A_ EV_IO, wl);
		3303
		3304	wl = wn;
		3305	}
		3306
		3307	if (types & (EV_TIMER | EV_STAT))
		3308	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3309	#if EV_STAT_ENABLE
		3310	/*TODO: timer is not always active*/
		3311	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3312	{
		3313	if (types & EV_STAT)
		3314	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3315	}
		3316	else
		3317	#endif
		3318	if (types & EV_TIMER)
		3319	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3320
		3321	#if EV_PERIODIC_ENABLE
		3322	if (types & EV_PERIODIC)
		3323	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3324	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3325	#endif
		3326
		3327	#if EV_IDLE_ENABLE
		3328	if (types & EV_IDLE)
		3329	for (j = NUMPRI; i--; )
		3330	for (i = idlecnt [j]; i--; )
		3331	cb (EV_A_ EV_IDLE, idles [j][i]);
		3332	#endif
		3333
		3334	#if EV_FORK_ENABLE
		3335	if (types & EV_FORK)
		3336	for (i = forkcnt; i--; )
		3337	if (ev_cb (forks [i]) != embed_fork_cb)
		3338	cb (EV_A_ EV_FORK, forks [i]);
		3339	#endif
		3340
		3341	#if EV_ASYNC_ENABLE
		3342	if (types & EV_ASYNC)
		3343	for (i = asynccnt; i--; )
		3344	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3345	#endif
		3346
		3347	if (types & EV_PREPARE)
		3348	for (i = preparecnt; i--; )
		3349	#if EV_EMBED_ENABLE
		3350	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3351	#endif
		3352	cb (EV_A_ EV_PREPARE, prepares [i]);
		3353
		3354	if (types & EV_CHECK)
		3355	for (i = checkcnt; i--; )
		3356	cb (EV_A_ EV_CHECK, checks [i]);
		3357
		3358	if (types & EV_SIGNAL)
		3359	for (i = 0; i < signalmax; ++i)
		3360	for (wl = signals [i].head; wl; )
		3361	{
		3362	wn = wl->next;
		3363	cb (EV_A_ EV_SIGNAL, wl);
		3364	wl = wn;
		3365	}
		3366
		3367	if (types & EV_CHILD)
		3368	for (i = EV_PID_HASHSIZE; i--; )
		3369	for (wl = childs [i]; wl; )
		3370	{
		3371	wn = wl->next;
		3372	cb (EV_A_ EV_CHILD, wl);
		3373	wl = wn;
		3374	}
		3375	/* EV_STAT 0x00001000 /* stat data changed */
		3376	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3377	}
		3378	#endif
		3379
2967	#if EV_MULTIPLICITY	3380	#if EV_MULTIPLICITY
2968	#include "ev_wrap.h"	3381	#include "ev_wrap.h"
2969	#endif	3382	#endif
2970		3383
2971	#ifdef __cplusplus	3384	#ifdef __cplusplus

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